In this 1972 cartoon adaptation children's book "The Lorax", Dr. Seuss creatively explains the value of the environment and our responsibility no to damage it too far. The antagonistic industrialist known as the Onceler makes a profit out of cutting down the local Truffala trees for his merchandise known as thneeds. However, as removes more and more trees without replanting them nor with any caution, results start showing up. Because of the lack of trees as well as the pollution from the Onceler's factories, the local animals end up having no choice but to leave their homes for somewhere else. Throughout the Oncler's removal of the forest, the Lorax, the one who "speaks for the trees, pleads with the irresponsible Corporate to stop while he still can. Unfortunately, the Onceler always refused and proceeded to cut down the forest until the very last tree was cut down. This affects him greatly since with no more trees, he can no longer supply his factories for his thneeds. With no more production, the workers leave to find new jobs and there is no more profit to gain, thus the Onceler loses everything.
The cartoon ends with him the Onceler finally realizing how much his actions were responsible for ruining the environment for everyone, and how it can one day be restored stating "Unless someone like you cares a whole awful lot, Nothing is going to get better. It's not." He then gives the last Truffala tree seed to a boy who listened to his story, giving him instructions on what to do "It's a Truffula Seed. It's the last one of all!
You're in charge of the last of the Truffula Seeds.
And Truffula Trees are what everyone needs.
Plant a new Truffula. Treat it with care.
Give it clean water. And feed it fresh air.
Grow a forest. Protect it from axes that hack.
Then the Lorax and all of his friends may come back."
"The Lorax" teaches both children and adults a valuable lesson about the environment and serves as a cautionary tale about sustainability. Seuss doesn't directly tell the viewer that trees give oxygen for us to breathe since the reader could figure that out through his storytelling; when the trees were around there was fresh air for the native swomee swans and other inhabitants to breathe, but once most of trees were gone and pollution was released the air was full of smog and unsuitable for the swomee swans to live in. While he did directly discuss about sustainable practices, Seuss also didn't have to directly mention the Onceler not replanting the trees he cut down. The viewer can figure out what the Onceler was doing wrong since throughout the book the Truffula trees keep getting cut down and by the end of the story there aren't any left, so it is implied that the Onceler didn't have enough concern to replant seeds to keep a steady amount of Truffula Trees for both his supply and the ecosystem.
However, in the book Seuss didn't include what the Onceler would do if he and his workers stopped production, considering if he immediately shut down his factory and stop production he would put all of his workers out of a job. Fortunately, in this version that concern is brought up. The brief song sequences prove to add a little fun as relief to ease the more tense parts of the cartoon. Overall, "The Lorax" is a great story that teaches a valuable lesson about the consequences of not being concerned with the balance of nature.